JP2011061723A5

JP2011061723A5 -

Info

Publication number: JP2011061723A5
Application number: JP2009212225A
Authority: JP
Filing date: 2009-09-14
Publication date: 2012-02-02
Anticipated expiration: 2029-09-14

Description

本実施形態に係る色変換装置としての画像処理装置が組み込まれた印刷システムの斜視説明図である。1 is an explanatory perspective view of a printing system in which an image processing apparatus as a color conversion apparatus according to an embodiment is incorporated. 本実施形態に係るカラーチャートの概略正面図である。It is a schematic front view of the color chart which concerns on this embodiment. 本実施形態に係るプロファイル生成装置の機能ブロック図である。It is a functional block diagram of the profile production | generation apparatus which concerns on this embodiment. 本実施形態に係る出力プロファイル管理部の機能ブロック図である。It is a functional block diagram of the output profile management part which concerns on this embodiment. 図５Ａ〜図５Ｄは、本実施形態に係るプロファイル生成条件の設定画面の一例を示す図である。5A to 5D are diagrams illustrating an example of a profile generation condition setting screen according to the present embodiment. 本実施形態に係るプロファイル生成条件の設定画面の一例を示す図である。It is a figure which shows an example of the setting screen of the profile generation condition which concerns on this embodiment. 本実施形態に係る印刷システムを用いて適切な印刷物を得るためのフローチャートである。It is a flowchart for obtaining an appropriate printed matter using the printing system according to the present embodiment. 本実施形態に係るプロファイルの生成方法に関するフローチャートである。It is a flowchart regarding the production | generation method of the profile which concerns on this embodiment. 図９Ａは、透過光源単体の輝度を測定する方法を説明する斜視図である。図９Ｂは、反射光源単体の輝度を測定する方法を説明する斜視図である。FIG. 9A is a perspective view illustrating a method for measuring the luminance of a single transmissive light source. FIG. 9B is a perspective view for explaining a method of measuring the luminance of the reflection light source alone. 保護膜の光学物性値を推定するために作製された測定試料の概略断面図である。It is a schematic sectional drawing of the measurement sample produced in order to estimate the optical property value of a protective film. 分光感度分布の変化を考慮した色変換処理部の詳細機能ブロック図である。It is a detailed functional block diagram of a color conversion processing unit considering a change in spectral sensitivity distribution. 本実施形態に係る色校正装置が組み込まれた印刷色校正システムの斜視説明図である。1 is a perspective explanatory view of a printing color proofing system in which a color proofing device according to an embodiment is incorporated.

以下、本発明に係る測色値算出方法、プロファイル生成方法及び色変換方法について、それを実施する測色値算出装置（色変換装置）並びに印刷システムとの関係において好適な実施形態を挙げ、添付の図面を参照しながら詳細に説明する。 Hereinafter, colorimetric value calculating method according to the present invention, the profile generating method and color conversion method, like the preferred embodiment in relation to the colorimetric value calculator (color conversion device) and a printing system for implementing it, attached This will be described in detail with reference to the drawings.

ゲージ１６４左端の下方部には、数字の入力が自在なテキストボックス１６８が設けられており、「０．４」なる数字を表示している。ゲージ１６４右端の下方部には、数字の入力が自在なテキストボックス１７０が設けられており、「０．６」なる数字を表示している。 A text box 168 in which numbers can be freely input is provided at the lower part of the left end of the gauge 164 , and the number “0.4” is displayed. A text box 170 in which numbers can be freely input is provided at the lower part of the right end of the gauge 164 , and a number “0.6” is displayed.

さらに、Ｓａｕｎｄｅｒｓｏｎの補正式等を用いて、実測された分光反射率Ｒ_ｎを補正した上で、Ｋｕｂｅｌｋａ−Ｍｕｎｋモデルを適用してもよい（“Ｃａｌｃｕｌａｔｉｏｎｏｆｔｈｅｃｏｌｏｒｏｆｐｉｇｍｅｎｔｅｄｐｌａｓｔｉｃｓ”，ＪＯＵＲＮＡＬＯＦＴＨＥＯＰＴＩＣＡＬＳＯＣＩＥＴＹＯＦＡＭＥＲＩＣＡ，ＶＯＬＵＭＥ３２，ＰＰ，７２７−７３６，１９４２参照）。この補正により、ラミネートフイルム２００と外部との界面における光反射がさらに考慮されるので、保護膜付印刷物の分光反射率をさらに高精度に予測できる。 Further, by using a correction formula and the like of Saunderson, on which corrects the actually measured spectral reflectance _{R n,} which may be applied Kubelka-Munk model ( "Calculation of the color of pigment ed plastics", JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, VOLUME 32, PP, 727-736, 1942). By this correction, light reflection at the interface between the laminate film 200 and the outside is further taken into consideration, so that the spectral reflectance of the printed matter with the protective film can be predicted with higher accuracy.

また、ＰＣ３０２は、入力プロファイル及び出力プロファイルを記憶する記憶部３１８を備えている。記憶部３１８は、入力プロファイル処理部３１０に入力プロファイルを供給するとともに、出力プロファイル処理部３１２に出力プロファイルを供給する。 The PC 302 also includes a storage unit 318 that stores an input profile and an output profile. Storage unit 318 supplies supplies an output to the output profile processor 312 profile input profile to the input profile processor 310.

Claims

A colorimetric value calculation method for calculating a colorimetric value of a printed matter in which an image is formed on a transmissive medium in an observation environment in which a transmissive light source and a reflective light source coexist,
A first acquisition process for acquiring the spectral transmittance of the printed matter and the spectral reflectance of the printed matter;
A second acquisition process for acquiring the spectral distribution of the transmitted light source and the spectral distribution of the reflected light source;
A calculation process for calculating a colorimetric value of the printed material under the observation environment using the acquired spectral transmittance of the printed material, spectral reflectance of the printed material, spectral distribution of the transmissive light source, and spectral distribution of the reflected light source; A colorimetric value calculation method comprising:

The colorimetric value calculation method according to claim 1,
A third acquisition process for acquiring the degree of influence of the transmission light source and the reflection light source on the appearance of the printed matter ;
The colorimetric value calculation method, wherein the calculation process further uses the influence degree to calculate a colorimetric value of the printed matter in the observation environment.

In the colorimetric value calculation method according to claim 1 or 2,
An estimation process for estimating the optical property value of the protective film;
A fourth acquisition process for acquiring the spectral transmittance of the protective film;
Using the spectral transmittance of the printed matter and the acquired spectral transmittance of the protective film, a first prediction process for predicting the spectral transmittance of the printed matter with a protective film in which the protective film is coated on the printed matter;
A second prediction process for predicting the spectral reflectance of the printed matter with a protective film using the spectral reflectance of the printed matter and the estimated optical property value of the protective film, and
The colorimetric value calculation method, wherein the calculation process calculates a colorimetric value of the printed matter with a protective film in the observation environment.

In the colorimetric value calculation method according to any one of claims 1 to 3,
The first acquisition process is performed using a unit that measures a light source or a unit that acquires from a database.

In the colorimetric value calculation method according to claim 2 or 3,
The third acquisition process is performed using means for acquiring the degree of influence according to user designation or means for acquiring the degree of influence by measuring the transmission light source and the reflection light source. Calculation method.

Using the colorimetric value calculation method according to any one of claims 1 to 5,
By the calculation process, colorimetric values of a color chart printed on the transparent medium are calculated,
A profile generation method comprising: a generation process for generating the printing profile based on the calculated colorimetric value of the color chart.

Using the profile generation method according to claim 6,
A color conversion method using an arbitrary profile as an input profile and color-converting image data representing the image to be printed using the print profile generated by the profile generation method as an output profile .

The color conversion method according to claim 7.
Using the printing profile as an input profile, using the color proofing device profile as an output profile, further color-converting the color-converted image data and inputting the color proofing device to the color proofing device;
A color conversion method, further comprising: an adjustment process for adjusting an influence degree of the transmission light source and the reflection light source while referring to an image output by the color calibration device.

A color conversion device that performs color conversion of a printed material in which an image is formed on a transmission medium in an observation environment in which a transmission light source and a reflection light source coexist,
A first acquisition unit that acquires the spectral transmittance of the printed matter and the spectral reflectance of the printed matter;
A second acquisition unit for acquiring a spectral distribution of the transmissive light source and a spectral distribution of the reflective light source;
Using the spectral transmittance of the printed material and the spectral reflectance of the printed material acquired by the first acquiring unit, and the spectral distribution of the transmitted light source and the spectral distribution of the reflected light source acquired by the second acquiring unit. Calculating a colorimetric value of the printed matter under the observation environment;
A profile generation unit that generates a print profile based on a colorimetric value of the printed matter in the observation environment calculated by the calculation unit;
A color conversion processing unit that performs color conversion on image data representing the image to be printed, using an arbitrary profile as an input profile, and using the print profile generated by the profile generation unit as an output profile. Characteristic color conversion device.

In an observation environment in which a transmissive light source and a reflective light source coexist, a computer is used to perform color conversion of a printed material on which an image is formed on a transmissive medium
Processing for obtaining spectral transmittance of the printed matter and spectral reflectance of the printed matter;
Processing for obtaining a spectral distribution of the transmissive light source and a spectral distribution of the reflective light source;
A process of calculating a colorimetric value of the printed matter in the observation environment using the spectral distribution of the transmitted light source, the spectral distribution of the reflected light source, the spectral transmittance of the printed matter, and the spectral reflectance of the printed matter;
Processing for generating a print profile based on the calculated colorimetric values of the printed matter in the observation environment;
A color conversion program for causing an arbitrary profile to be used as an input profile, and using the generated print profile as an output profile to function as a color conversion process for image data representing the image to be printed.